Loans and Allowance for Credit Losses - Credit risk profile based on rating category and year of origination (Details) - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2021	Jun. 30, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Amount of loan relationships subject to annual credit analysis	$ 3,000
Loan relationships that are subject to independent annual review	1,000
Current fiscal year	636,103	$ 1,034,652
Year One	805,616	433,293
Year Two	320,200	182,774
Year Three	138,532	118,958
Year Four	88,090	115,845
Prior	192,179	143,946
Revolving loans	210,703	207,623
Total	2,391,423	2,237,091
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	607,122	1,015,117
Year One	793,966	420,483
Year Two	316,489	169,879
Year Three	136,795	115,613
Year Four	87,319	101,993
Prior	191,188	142,556
Revolving loans	207,353	204,930
Total	2,340,232	2,170,571
Watch
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	1,069	6,415
Year One	5,439	2,697
Year Two	2,398	11,235
Year Three	446	1,399
Year Four	694	815
Prior	452	819
Revolving loans	1,635	1,321
Total	12,133	24,701
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	23,425
Year One		8,806
Year Three		1,793
Year Four		12,826
Revolving loans	300	300
Total	23,725	23,725
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	4,487	13,120
Year One	6,211	1,307
Year Two	1,313	810
Year Three	464	153
Year Four	77	211
Prior	539	571
Revolving loans	1,415	1,072
Total	14,506	17,244
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Year Two		850
Year Three	827
Total	827	850
Residential Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	209,356	366,492
Year One	312,426	175,931
Year Two	155,591	43,986
Year Three	27,775	33,021
Year Four	25,127	23,356
Prior	72,349	72,873
Revolving loans	6,572	5,557
Total	809,196	721,216
Residential Real Estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	208,789	361,876
Year One	311,065	175,772
Year Two	155,440	43,576
Year Three	27,199	32,929
Year Four	25,075	23,267
Prior	72,099	71,592
Revolving loans	6,572	5,557
Total	806,239	714,569
Residential Real Estate | Watch
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	84	328
Year One	323	70
Year Two		410
Year Three	384
Year Four		89
Prior	10	809
Total	801	1,706
Residential Real Estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	483	4,288
Year One	1,038	89
Year Two	151
Year Three	192	92
Year Four	52
Prior	240	472
Total	2,156	4,941
Construction Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	65,140	88,418
Year One	50,477	45,866
Year Two	31,935
Revolving loans	65
Total	147,617	134,284
Construction Real Estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	65,140	88,371
Year One	50,291	45,866
Year Two	31,935
Revolving loans	65
Total	147,431	134,237
Construction Real Estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year		47
Year One	186
Total	186	47
Commercial Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	284,978	364,379
Year One	293,974	159,978
Year Two	100,596	115,603
Year Three	94,171	79,168
Year Four	58,187	84,484
Prior	106,832	61,303
Revolving loans	24,561	24,878
Total	963,299	889,793
Commercial Real Estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	257,283	351,732
Year One	285,607	147,670
Year Two	97,132	104,746
Year Three	93,309	75,967
Year Four	57,468	70,927
Prior	106,491	61,194
Revolving loans	22,931	23,699
Total	920,221	835,935
Commercial Real Estate | Watch
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	288	4,456
Year One	3,968	2,365
Year Two	2,340	9,502
Year Three	22	1,377
Year Four	694	726
Prior	245	10
Revolving loans	1,261	810
Total	8,818	19,246
Commercial Real Estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	23,425
Year One		8,806
Year Three		1,793
Year Four		12,826
Revolving loans	300	300
Total	23,725	23,725
Commercial Real Estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	3,982	8,191
Year One	4,399	1,137
Year Two	1,124	505
Year Three	13	31
Year Four	25	5
Prior	96	99
Revolving loans	69	69
Total	9,708	10,037
Commercial Real Estate | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Year Two		850
Year Three	827
Total	827	850
Consumer loans
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	16,295	23,938
Year One	16,201	8,626
Year Two	5,706	3,597
Year Three	2,092	1,156
Year Four	657	564
Prior	872	650
Revolving loans	39,226	39,143
Total	81,049	77,674
Consumer loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	16,295	23,858
Year One	16,061	8,626
Year Two	5,706	3,597
Year Three	2,091	1,126
Year Four	657	534
Prior	841	650
Revolving loans	39,166	39,071
Total	80,817	77,462
Consumer loans | Watch
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year		80
Year One	76
Revolving loans	48	48
Total	124	128
Consumer loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Year One	64
Year Three	1	30
Year Four		30
Prior	31
Revolving loans	12	24
Total	108	84
Commercial loans
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	60,334	191,425
Year One	132,538	42,892
Year Two	26,372	19,588
Year Three	14,494	5,613
Year Four	4,119	7,441
Prior	12,126	9,120
Revolving loans	140,279	138,045
Total	390,262	414,124
Commercial loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	59,615	189,280
Year One	130,942	42,549
Year Two	26,276	17,960
Year Three	14,196	5,591
Year Four	4,119	7,265
Prior	11,757	9,120
Revolving loans	138,619	136,603
Total	385,524	408,368
Commercial loans | Watch
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	697	1,551
Year One	1,072	262
Year Two	58	1,323
Year Three	40	22
Prior	197
Revolving loans	326	463
Total	2,390	3,621
Commercial loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	22	594
Year One	524	81
Year Two	38	305
Year Three	258
Year Four		176
Prior	172
Revolving loans	1,334	979
Total	$ 2,348	$ 2,135